diff --git a/include/proto/ssl_sock.h b/include/proto/ssl_sock.h
index 32b7a33..690199a 100644
--- a/include/proto/ssl_sock.h
+++ b/include/proto/ssl_sock.h
@@ -46,6 +46,7 @@
 extern unsigned int openssl_engines_initialized;
 extern int nb_engines;
 extern struct xprt_ops ssl_sock;
+extern int ssl_capture_ptr_index;
 
 /* boolean, returns true if connection is over SSL */
 static inline